Scientists wanted to test the efficacy of Vitamin C for preventing colds. The information in this table displays results of the study. A random sample of 300 adults was given either a vitamin C pill or a sugar pill each day during a 2-week period, and the adults reported to researchers whether they came down with a cold during that time period. What proportion of
adults who got the sugar pill reported that they came down with a cold?
O9/50
O 11/18
O 11/100
O 11/50